Math Problem Statement

The figure below is reflected over the y-axis and then rotated 180° clockwise. What are the coordinates of the image of point X after these transformations?

Solution

The problem asks for the coordinates of the image of point XX after two transformations: a reflection over the yy-axis, followed by a 180180^\circ clockwise rotation. Let's solve step by step:


Step 1: Identify point XX

From the graph, point XX is located at (4,4)(4, 4).


Step 2: Reflect over the yy-axis

To reflect over the yy-axis, we negate the xx-coordinate of XX. The new coordinates become:

X=(4,4)X' = (-4, 4)


Step 3: Rotate 180180^\circ clockwise

A 180180^\circ clockwise rotation about the origin transforms (x,y)(x, y) into (x,y)(-x, -y). Applying this to X=(4,4)X' = (-4, 4):

X=((4),(4))=(4,4)X'' = (-(-4), -(4)) = (4, -4)


Final Answer

The final coordinates of the image of point XX after the transformations are:

(4,4)\boxed{(4, -4)}


Would you like a more detailed breakdown or further clarification? Here are related questions to deepen your understanding:

  1. How do reflections over the xx- and yy-axes differ?
  2. How would a 9090^\circ clockwise rotation affect the coordinates?
  3. What is the formula for 270270^\circ counterclockwise rotation, and how does it relate to a 9090^\circ clockwise rotation?
  4. What happens to the coordinates when an object is reflected over the line y=xy = x?
  5. Can we use matrices to simplify the transformations? If so, how?

Tip:

When solving transformation problems, apply each step one at a time, carefully tracking the coordinates after each operation.

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Math Problem Analysis

Mathematical Concepts

Coordinate Geometry
Transformations
Reflections
Rotations

Formulas

Reflection over y-axis: (x, y) -> (-x, y)
180° clockwise rotation: (x, y) -> (-x, -y)

Theorems

Transformation Rules in Geometry

Suitable Grade Level

Grades 8-10